Answer:
Explanation:
The first one. They are both alcohol groups
A.
This is because BaSO₄ has the lowest solubility product out of all the substances.
I would say that descriptive investigations aren't repeatable because it means that you are only describing something - you ask certain question about something, but do not form a hypothesis at that point yet. So it would be a waste of time to simply ask the same questions over and over again with no hypothesis to prove, which is why these types of investigations cannot be repeated.
Answer:
let number of carbon is an
Explanation:
hence 12 and + 2n is equal to 126
14 and is equal to 126
n is equal to 9